John speioher



(No Model.)

- J. SPEICHER.

TELBGRAPH AND TELEPHONE CABLE.

No. 269,735. Patented 1360.26, 1882.

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UNITED STATES JOHN SPEICHER, OF NEW YORK, N. Y.,`ASSIGNOR OFTHREE-FOURTEIS TO DAVID W. FAIRCHILD, OF BROOKLYN, NEW YORK, W. POWELLWARE, OF JERSEY CITY, AND FREDERICK T. FEAREY, OF NE\VAR K,'N. J.

TELEGRAPH AND TELEPHONE CABLE.

SPECIFICATION forming part of Letters Patent No. 269,735, dated December26, 1882.

Application filed June 2l, 18852. (No model.)

To all whom it may concern Be it known that I, JOHN SPEICHER, of' NewYork, in the county and State ot' New York, have invented a new anduseful Improvement in Telegraph and Telephone Cables, of which the.following is a specitication.

My invention relates to an improvement in cables ot' insulated wires,whereby the insulation is made more perfect, eti'ectually preventing theinterferences-so common in other forms ot' cables, and is designed foraerial, underground,or submerged cables; and it consists in the devicessubstantially as hereinafter set forth.

Figure l shows a series of wires laid on a piece of insulating-clothpreparatory to being rolled into a cable. Fig. 2 shows the relation ofthe conductors when rolled into acable. Figs. 3 and 4 show modifiedforms of making up the cables, Fig. 3 showing an extra layer between theparts.

In my improvement I take the common cotton-covered wires A and lay themclose together on rubber cloth B, or tarred cloth, or cloth of someother suitable material, uniting them with the cloth and filling up allthe interstices with a shellac so prepared by union with a waxy compoundythat it possesses a inea-sure ot' elasticity which allows the fabric tobe closely rolled, which, when it is done, presents the appearance atthe end seen in Fig. 2, where the conductors, in their cotton coating,lie close together in a series, with a layer ot` insulating-clothbetween the series.l ln place ofthe cable being made up by rolling, asabove named, it may be made by a series ot' doublingsof the fabric B, asseen in Figs. 3 and 4, leaving a iiat layer of conductors together, witha layer of the cloth bctween them, and the shellac preparation used 4oas in the former case. Any desired number of wires are hunched togetherin a square, round,

or other form. After the cable has been made up'in either form named acovering ot' thin sheet-copper, ),is placed over the whole, and 45 overthis is placed another sheet of rubber or tarred canvas, or a canvashaving some other suitable coating, andthe whole is covered with theprepared shellac. These combinations and coatings, it is believed, willrender the cable 5o proof against all influences from moisture or heatand cold, which in other forms are so liable toimpairthe cable andIallow of interference with it. The form ot' uniting and bnnching thewires into a cable may be changed somewhat, 55 and yet the whole hecompletely protected by the copperand canvas external covering, which isan especial feature ot' my invention.

I claiml. The cable composed of a series of con- 6o ductors havingthecotton covering, lying' close together and hunched, with a layer ofinsulating-cloth between the layers of wires, and treated with aprepared shellac, substantially as land for the purpose specitied.

2. The combination of the conductors A, insulating fabric B,substantially as described, and the cover of copper C and of canvas D,coated with shellac, substantially as set iorth.

3. A cable having a series of conductors 7o provided with suitableinsulating-layers, and having an external covering of copper and canvas,substantiallyT as and for the purpose specified.

JOHN SPEICHER. fitnesses HORACE HARRIS, F. T. FEAREY.

